Fix certificate version number in test

The version number 3 means version 4, while 2 means version 3. Since this is the v3nametest, version 3 should be used.

CLA: Trivial
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3577)

test/v3nametest.c

@@ -251,7 +251,7 @@ static X509 *make_cert()
 
     if (!TEST_ptr(crt = X509_new()))
         return NULL;
-    if (!TEST_true(X509_set_version(crt, 3))) {
+    if (!TEST_true(X509_set_version(crt, 2))) {
         X509_free(crt);
         return NULL;
     }